File monitor trigger and Microsoft Excel files

Due to the internal procedure that Microsoft Excel uses to save a spreadsheet, the file monitor trigger does not function as expected when configured with the "changed" option.

In order to get the desired behavior from our trigger, we will have to set the option to "renamed"; this way, the trigger will fire when the hidden temporary file is renamed to the original's name (the final part of the Excel saving process as described in the link above).